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7075 aluminum plate 2011 executive standard GB/T3880.2-2006 (1) of 7000 aluminum alloy is another common alloy, wide variety. It contains zinc and magnesium. The more common in aluminum alloy is the best of the strength of 7075, but it can't carry on the welding, and it corrosion resistance is poor, many CNC cutting manufacturing parts with is 7075 alloy. Zinc in this series is the main alloy element, add a little magnesium alloys can make the material can heat treatment, arrived at very high strength properties. This series material generally are joining the small quantities of copper, chromium alloy, and among them with the Numbers of 7075 aluminum alloy is top grade, the highest strength, suitable for the plane to architecture and the high strength accessories.

Shanghai Shanghai process 7075 bar

(2) of Al-Zn-Mg-Cu department super-hard aluminum, this alloy is the 1940 s it has been used in the aircraft industry, still in the aviation industry of widely used high strength deformation aluminum alloy. Its characteristic is, solid solution after processing plastic good, heat treatment, the strengthening effect is very good, in the 150 ℃ high strength, and have a very good strength at low temperature; The welding performance is poor; Have the stress corrosion cracking tendency; Need to the bag aluminum or other protection treatment use. Double level limitation can improve the stress corrosion cracking resistant alloy of ability. In annealing and just quenching state of the plastic slightly lower than the state of the same 2 A12. Slightly better than 7 A04, plank of static fatigue. Gap sensitive, stress corrosion performance than the 7 A04

7075 chemical composition

Chemical composition / %, is no more than the other impurities / %, is no more than the

alloy

Brand silicon

Si iron

Fe copper

Cu manganese

Mn magnesium

Mg chromium

Cr zinc

Zn titanium

Ti single total and aluminum

al

7075 0.4 0.5 1.2-frequency quartile 20 0.3 2.1 2.9 0.18 quartile-028 5.1 6.1 0.2 0.05 0.15 quartile headroom

7075 mechanical properties:

Mechanical performance analysis (Typical Mechanical Properties)

Aluminum alloy brand

And state tensile strength yield strength hardness elongation

(250 ℃ MPa) (250 ℃ MPa) 500 kg force 10 mm ball 1.6 mm (1/16 in) thickness

ALLOYAND TEMPER Ultimate Tensile

Strength Ultimate Tensile

Strength Hardness Elongation

7075 572 503 160 T651-11

Physical performance analysis (Typical Physical Properties)

Aluminum alloy brand

Thermal expansion coefficient and state

(20-100 ℃) um/m.k melting point range (℃) conductivity 20 ℃ (68 ° F) (% ACS) resistivity 20 ℃ (68 ° F) m ㎡ / m

ALLOY AND

TEMPER Average Coefficient Of

Thermal Expansion Melting Range Electrical Conductivity Electrical

Resistivity

7075-T651 23.6 475-635 and 0.0515